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Consolidated Balance Sheets (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2012
Dec. 31, 2011
Current assets:    
Cash $ 48,048 $ 35,085 [1]
Receivables:    
Trade, net of allowance for doubtful accounts of $561 and $340, respectively 72,774 68,611 [1]
Other 886 1,187 [1]
Total receivables 73,660 69,798 [1]
Inventories 79,922 71,068 [1]
Prepaid expenses 4,429 2,311 [1]
Income taxes receivable   203 [1]
Total current assets 206,059 178,465 [1]
Property, plant and equipment, net 48,449 39,273 [1]
Intangible assets 113,059 116,189 [1]
Other assets 4,077 5,214 [1]
Total assets 371,644 339,141 [1]
Current liabilities:    
Current installments of long-term debt 15,051 14,460 [1]
Current installments of other liabilities 1,072 1,038 [1]
Accounts payable 23,837 23,214 [1]
Deferred revenue 201 7,571 [1]
Accrued program costs 57,734 25,910 [1]
Accrued expenses and other payables 6,143 6,832 [1]
Income taxes payable 30  
Total current liabilities 104,068 79,025 [1]
Long-term debt, excluding current installments 41,027 51,917 [1]
Other liabilities, excluding current installments 5,563 5,955 [1]
Deferred income taxes 15,172 15,172 [1]
Total liabilities 165,830 152,069 [1]
Commitments and contingent liabilities       [1]
Stockholders' equity:    
Preferred stock, $.10 par value per share; authorized 400,000 shares; none issued       [1]
Common stock, $.10 par value per share; authorized 40,000,000 shares; issued 30,158,615 shares at June 30, 2012 and 29,845,047 shares at December 31, 2011 3,016 2,985 [1]
Additional paid-in capital 48,411 45,966 [1]
Accumulated other comprehensive loss (2,082) (2,250) [1]
Retained earnings 159,622 143,524 [1]
Total stockholders' equity including treasury stock 208,967 190,225 [1]
Less treasury stock, at cost, 2,260,996 shares at June 30, 2012 and at December 31, 2011 (3,153) (3,153) [1]
Total stockholders' equity 205,814 187,072 [1]
Total liabilities and stockholders' equity $ 371,644 $ 339,141 [1]
[1] The balance sheet at December 31, 2011 has been derived from the audited financial statements at that date.